A London gallery branches out in New York with a stellar show of two works by this young British artist of considerable talent and audacity. In a video, tucked away in the back of the space, we witness the artist undergoing Botox injections in her vocal cords, a procedure typically reserved for transgender people seeking to lower their voices. It is excruciating to watch, but Simnett’s narration—part folktale, part scientific history, part diary—transforms the proceedings into a modern-day myth about the body’s plasticity and limitations. In a thematically related light-and-sound installation, we hear the artist hyperventilate until she loses consciousness. It could have been a tired retread of endurance art; instead, the gasping for breath becomes both erotic and terrifying.